The book titled "Systema Naturae" was written by whom?

The taxonomic category that consists of organisms with maximum similarity and the ability to interbreed to produce fertile offspring is .........

The specimen used for the original publication by the author is known as:

$A$ species is taxonomically defined as:

Select the correct option from the following statements:
$(i)$ Flora/Monograph provides information for identification of names of species found in an area.
$(ii)$ Each category,referred to as a unit of classification,is termed as a taxonomic category/taxonomic rank.

What do the taxonomic categories together constitute?